CN204870526U - Hydraulic hybrid vehicle and hydraulic hybrid system thereof - Google Patents
Hydraulic hybrid vehicle and hydraulic hybrid system thereof Download PDFInfo
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- CN204870526U CN204870526U CN201520262694.6U CN201520262694U CN204870526U CN 204870526 U CN204870526 U CN 204870526U CN 201520262694 U CN201520262694 U CN 201520262694U CN 204870526 U CN204870526 U CN 204870526U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The utility model discloses a hydraulic hybrid vehicle and hydraulic hybrid system thereof, the input shaft of the output shaft lug connection drive gear group of engine in this hydraulic hybrid system, the first output shaft of drive gear group passes through the first input shaft of the 2nd drive gear of clutch disconnection group, the second output shaft of drive gear group connects the drive shaft of hydraulic pump, and the second input shaft of directional control valve intercommunication / disconnection hydraulic pump / motor, the 2nd drive gear of the output shaft group of hydraulic pump / motor is passed through in the hydraulic oil export of hydraulic pump, the transaxle of the output shaft hydraulic hybrid vehicle of secondary drive gear train, the export working connection of hydraulic pump pass through the directional control valve all can with the oil inlet and the oil -out intercommunication / disconnection of hydraulic pump / motor, high -pressure accumulator's actuator port passes through the ooff valve and can communicate / break off the working connection to hydraulic oil in the working connection flows in the hydraulic oil inflow working connection among high -pressure accumulator or the high -pressure accumulator, this driving system has than higher reliability, and energy recovering efficiency is than higher.
Description
Technical field
The utility model relates to vehicle hydraulic control technology field, particularly hydraulic hybrid power vehicles and hydraulic hybrid power system thereof.
Background technology
Hydraulic hybrid power vehicles is a kind of vehicle driven by hydraulic pressure, mechanical reasonable disposition, has been widely used at present in daily life, the construction machinery and equipment formula vehicles such as such as hydraulic hybrid drive-type loader, bulldozer.
Please refer to Fig. 1, Fig. 1 is the structural representation of the hydraulic hybrid power system of a kind of hydraulic hybrid power vehicles in prior art.
In prior art, hydraulic hybrid power system comprises hydraulic variable displacement pump 1 ', check valve 2 ', central controller 3 ', 2/2-way change-over valve 4 ', high-pressure hydraulic accumulator 5 ', drg 7 ', planetary gear train 8 ', change-speed box 9 ', driving engine 10 ', power-transfer clutch 11 ', low-pressure hydraulic energy storage 12 ', hydraulic pump/motor 14 ', drive axle 15 ', transmission shaft 16 ' composition.
Driving engine 10 ' successively with power-transfer clutch 11 ', change-speed box 9 ' connects, the input shaft of planetary gear train 8 ' is connected with the output shaft of change-speed box 9 ', first output shaft 17 ' of planetary gear train 8 ' is connected with transmission shaft 16 ' one end, the other end of transmission shaft 16 ' is connected with the input end of drive axle 15 ', second output shaft 13 ' of planetary gear train 8 ' is connected with hydraulic pump/motor 14 ', 3rd output shaft 6 ' of planetary gear train 8 ' is connected with hydraulic variable displacement pump 1 ', the oil-feed port of hydraulic pump/motor 14 ' and the oil-feed port of 2/2-way change-over valve 4 ', the fuel-displaced port of check valve 2 ' is communicated with, the oil outlet of 2/2-way change-over valve 4 ' is communicated with the hydraulic fluid port of high-pressure hydraulic accumulator 5 ', the oil-feed port of check valve 2 ' is communicated with the fuel-displaced port of hydraulic variable displacement pump 1 ', the fuel-displaced port of hydraulic pump/motor 14 ', the oil-feed port of hydraulic variable displacement pump 1 ' is communicated with the oil circuit port of low-pressure hydraulic energy storage 12 ', the control input end of 2/2-way change-over valve 4 ' is connected with the first control output end of central controller 3 '.
When vehicle launch or low cruise operating mode, the work of central controller controls hydraulic pump/motor and motor operating conditions, control 2/2-way change-over valve simultaneously and open, and high-pressure hydraulic accumulator provides high pressure fuel source for hydraulic pump/motor, and now driving engine is in stopped status; When the pressure in high-pressure hydraulic accumulator is close to minimum operating pressure, driving engine 1 ' starts, and hydraulic pump/motor does not work.
When car speed exceedes critical speed, adopt hydraulic pressure and mechanically combining type of drive, driving engine and hydraulic pump/motor drive vehicle to travel jointly.Central controller controls power-transfer clutch combines, and the mechanical energy of driving engine drives vehicle by power-transfer clutch, transmission shaft, drive axle; Central controller controls 2/2-way change-over valve is opened, and the energy drives hydraulic pump/motor of hydraulic accumulator, star train of gears, transmission shaft, drive axle drive vehicle, realize combination drive.
When car brakeing operating mode, central controller starts control signal to hydraulic pump/motor, makes hydraulic pump/motor work in pump condition, opens 2/2-way change-over valve, to high pressure accumulator feedback energy simultaneously.
As can be seen from the above description, when not having pressure in high pressure accumulator, during low speed, pure hydraulic pressure starting function cannot realize, and have a strong impact on the normal operation of vehicle.Further, system only can reclaim the mechanical energy of wheel rotator inertia.
In addition, the braking energy reclaimed in system only can be applied to vehicle low speed pure hydraulic pressure starting function, and when the braking energy reclaimed reaches the highest amount of high pressure accumulator, unnecessary energy cannot be applied to the equipment of construction machinery and equipment.
Therefore, how to improve hydraulic hybrid power system in prior art, this system has higher reliability, and energy recovery rate is higher, is those skilled in that art's technical matterss urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is for providing a kind of hydraulic hybrid power vehicles and hydraulic hybrid power system thereof, and this power system has higher reliability, and energy recovery rate is higher.
For solving the problems of the technologies described above, the utility model provides a kind of hydraulic hybrid power system, comprises driving engine, hydraulic pump/motor, Hydraulic Pump, high pressure accumulator, is provided with directional control valve between described Hydraulic Pump and described hydraulic pump/motor, also comprise auxiliary gear box and power coupling mechanism
The output shaft of described driving engine directly connects the input shaft of described auxiliary gear box, and the first output shaft of described auxiliary gear box is connected by power-transfer clutch/disconnected the first input shaft of described power coupling mechanism;
The axle drive shaft of the second output shaft connecting fluid press pump of described auxiliary gear box, the hydraulic oil outlet of described Hydraulic Pump is communicated with/disconnects described hydraulic pump/motor by described directional control valve, and the output shaft of described hydraulic pump/motor connects the second input shaft of described power coupling mechanism;
The output shaft of described power coupling mechanism connects the drive axle of hydraulic hybrid power vehicles;
Described hydraulic pressure delivery side of pump working connection all by directional control valve can be communicated with oil outlet with the oil inlet of described hydraulic pump/motor/disconnect;
The actuator port of described high pressure accumulator can be communicated with/disconnect described working connection by switch valve, so that the hydraulic oil that the hydraulic oil in working connection flows in high pressure accumulator or high pressure accumulator flows into working connection.
Preferably, also comprise multiway valve group, described working connection is communicated with/disconnects the steering cylinder of described hydraulic hybrid power vehicles or/and operating cylinder by described multiway valve group;
When described motor vehicle driven by mixed power is in braking mode, the outlet of described hydraulic pump/motor is communicated with the steering cylinder of described hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder, to realize Vehicular turn or work operations through described working connection by described multiway valve group;
Described steering cylinder is used for wheel steering; Described operating cylinder is for driving the equipment action of described hydraulic hybrid power vehicles.
Preferably, described hydraulic pressure delivery side of pump is communicated with described steering cylinder or/and the working oil chamber of described operating cylinder through described working connection by described multiway valve group, to realize Vehicular turn or work operations.
Preferably, described steering cylinder is or/and the working oil chamber of operating cylinder is communicated with further by described multiway valve group/disconnects the actuator port of described high pressure accumulator;
When described steering cylinder or/and the working oil chamber oil return of operating cylinder time, described steering cylinder is or/and the working oil chamber of operating cylinder is communicated with the actuator port of described high pressure accumulator.
Preferably, the pipeline being communicated with the actuator port of described working connection and described high pressure accumulator comprises the first pipeline and the second pipeline, and switch valve comprises the first switch valve and second switch valve; Described first switch valve is located at described first pipeline, and described second switch is located at described second pipeline;
Hydraulic oil flows out respectively by described first pipeline and described second pipeline and flows into the inside of described high pressure accumulator.
Preferably, described first pipeline and described second pipeline are respectively arranged with the first check valve and the second check valve.
Preferably, also comprise change speed gear box, described change speed gear box is located between described power-transfer clutch and described power coupling mechanism.
Preferably, described Hydraulic Pump is volume adjustable hydraulic pump, and described hydraulic pump/motor is variable delivery hydraulic pump/motor.
Preferably, described directional control valve is three position four-way directional control valve, when described three position four-way directional control valve is positioned at the first control position, described high pressure accumulator, described Hydraulic Pump are communicated with by the oil inlet of described three position four-way directional control valve with described hydraulic pump/motor, and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve; When described three position four-way directional control valve is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator by described three position four-way directional control valve; When described three position four-way directional control valve is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
In hydraulic hybrid power system in the utility model, driving engine can pass through auxiliary gear box, power-transfer clutch, power coupling mechanism by transmission of power in drive axle, drives cartwheel, completes advance or the retrogressing of car load; Power also first can be converted into hydraulic energy by auxiliary gear box, Hydraulic Pump, power coupling mechanism by driving engine, Hydraulic Pump drives hydraulic pump/motor to rotate by working connection, hydraulic energy is converted to mechanical energy and is transmitted to drive axle by hydraulic pump/motor again, drive cartwheel, complete advance or the retrogressing of car load; Certainly, the power of driving engine also can be transmitted to wheel through above two approach simultaneously.
When braking the wheel in motion, cut-off clutch, the motion energy of wheel is delivered to hydraulic pump/motor by power coupling mechanism, and now hydraulic pump/motor works in the mode of pump, can play brake action to complete machine; Be communicated with the outlet working connection of hydraulic pump/motor simultaneously, can enter high pressure accumulator through working connection, namely hydraulic oil is pumped in high pressure accumulator from low pressure oil return circuit by hydraulic pump/motor, is got up by stored energy.
This power system is when detecting that at the vehicle launch initial stage energy in high pressure accumulator can not meet driving hydraulic pump/motor, and driving engine can drive Hydraulic Pump to hydraulic pump/motor fuel feeding, increases the reliability of system works.
Certainly, the hydraulic pressure conducting oil circuit in power system can increase check valve, change-over valve, etc. parts increase the reliability of system, concrete set-up mode does not describe in detail herein.
In a kind of concrete embodiment, working connection is communicated with/disconnects the steering cylinder of described hydraulic hybrid power vehicles or/and operating cylinder by described multiway valve group; When described motor vehicle driven by mixed power is in braking mode, described working connection is communicated with the steering cylinder of described hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder by described multiway valve group;
Described steering cylinder is used for wheel steering; Described operating cylinder is for driving the equipment action of described hydraulic hybrid power vehicles, and for loader, the equipment of loader is scraper bowl, and operating cylinder is the promotion oil cylinder be connected with scraper bowl.
The energy reclaimed during car brakeing in present embodiment can be directly used in and control steering cylinder or operating cylinder, to realize turning to or the action of equipment of vehicle, storing recycling without the need to being recycled to energy storage, making the utilization ratio of braking recuperated energy higher like this.Further, braking recuperated energy not only can be stored in high pressure accumulator, is used for driving vehicle to travel, but also can controls equipment action or turn to, make utilizing of recuperated energy wider.
In addition, Hydraulic Pump in above-mentioned power system can be used for as operating cylinder and steering cylinder fuel feeding to a certain extent, needed for the work meeting operating cylinder and steering cylinder, original independently steering pump and working-machine pump in prior art can be cancelled, reduce vehicle use cost.
On the basis of above-mentioned hydraulic hybrid power system, the utility model additionally provides a kind of hydraulic hybrid power vehicles, comprise wheel and control the hydraulic hybrid power system of described wheel, described hydraulic hybrid power system is the hydraulic hybrid power system described in above-mentioned any one.
Because the hydraulic hybrid power vehicles in the utility model has above-mentioned hydraulic hybrid power system, therefore this hydraulic hybrid power vehicles also has the above-mentioned technique effect of hydraulic hybrid power system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydraulic hybrid power system of a kind of hydraulic hybrid power vehicles in prior art;
Fig. 2 is the structural representation of hydraulic hybrid power system in a kind of specific embodiment of the utility model.
Wherein, the one-to-one relationship in Fig. 1 between Reference numeral and component names is as follows:
Hydraulic variable displacement pump 1 ', check valve 2 ', central controller 3 ', 2/2-way change-over valve 4 ', high-pressure hydraulic accumulator 5 ', drg 7 ', planetary gear train 8 ', change-speed box 9 ', driving engine 10 ', power-transfer clutch 11 ', low-pressure hydraulic energy storage 12 ', hydraulic pump/motor 14 ', drive axle 15 ', transmission shaft 16 ', the first output shaft 17 '.
Wherein, the one-to-one relationship in Fig. 2 between component names and Reference numeral is as follows:
Driving engine 1, multiway valve group 2, auxiliary gear box 3, Hydraulic Pump 4, check valve 5, first switch valve 6, first check valve 7, second check valve 24, power assembly controller 8, high pressure accumulator 9, by pass valve 10, hydraulic pump/motor 11, steering cylinder 12, power-transfer clutch 13, change speed gear box 14, low-pressure reservoir 15, power coupling mechanism 16, drive axle 17, three position four-way directional control valve 18, main shaft 20, working connection 21, operating cylinder 22, second switch valve 23.
Detailed description of the invention
Core of the present utility model is for providing a kind of hydraulic hybrid power vehicles and hydraulic hybrid power system thereof, and this power system has higher reliability, and energy recovery rate is higher.
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2, Fig. 2 is the structural representation of hydraulic hybrid power system in a kind of specific embodiment of the utility model.
The utility model provides a kind of hydraulic hybrid power system, comprise driving engine 1, hydraulic pump/motor 11, Hydraulic Pump 4, high pressure accumulator 9, hydraulic pump/motor 11 is a kind of according to use needs, both can make pump to use, the power that machinery rotates is transformed into the pressure of hydraulic pressure, also can use as motor, hydraulic energy is transformed into the power that machinery rotates.
Also be provided with directional control valve between Hydraulic Pump 4 in the utility model and hydraulic pump/motor 11, directional control valve can according to use needs, the flow direction of hydraulic oil between hydraulic control pump 4, hydraulic pressure/motor.The utility model also comprises auxiliary gear box 3 and power coupling mechanism 16, and the output shaft of driving engine 1 directly connects the input shaft of auxiliary gear box 3, and the first output shaft of auxiliary gear box 3 is connected by power-transfer clutch 13/disconnected the first input shaft of power coupling mechanism 16; The axle drive shaft of the second output shaft connecting fluid press pump 4 of auxiliary gear box 3, the hydraulic oil outlet of Hydraulic Pump 4 is communicated with/disconnects hydraulic pump/motor 11 by directional control valve, and the output shaft of hydraulic pump/motor 11 connects the second input shaft of power coupling mechanism 16; The output shaft of power coupling mechanism 16 connects the drive axle 17 of hydraulic hybrid power vehicles, and drive axle 17 drives main shaft 20 action.
In the utility model, the outlet working connection 21 of Hydraulic Pump 4 all by directional control valve can be communicated with oil outlet with the oil inlet of hydraulic pump/motor 11/disconnect; The actuator port of high pressure accumulator 9 can be communicated with/disconnect working connection 21 by switch valve.
Give a kind of concrete directional control valve in fig. 2, this directional control valve is three position four-way directional control valve 18, when three position four-way directional control valve 18 is positioned at the first control position, working connection 21 is communicated with by the oil inlet of three position four-way directional control valve 18 with hydraulic pump/motor 11, and the oil outlet of hydraulic pump/motor 11 is communicated with oil return circuit by three position four-way directional control valve 18; When three position four-way directional control valve 18 is positioned at the second control position, the oil inlet of hydraulic pump/motor 11 is communicated with oil return circuit, and oil outlet is communicated with working connection 21 by three position four-way directional control valve 18; When three position four-way directional control valve 18 is in meta, the oil outlet of hydraulic pump/motor 11 is communicated with oil inlet.
In hydraulic hybrid power system in the utility model, driving engine 1 can pass through auxiliary gear box 3, power-transfer clutch 13, power coupling mechanism 16 by transmission of power in drive axle 17, drives cartwheel, completes advance or the retrogressing of car load; Power also first can be converted into hydraulic energy by auxiliary gear box 3, Hydraulic Pump 4 power coupling mechanism 16 by driving engine 1, Hydraulic Pump 4 by working connection by stored energy in high pressure accumulator, high pressure accumulator supplies Hydraulic Pump/motor action by working connection again, hydraulic energy is converted to mechanical energy and is transmitted to drive axle 17, drive cartwheel, complete advance or the retrogressing of car load; Certainly, the power of driving engine 1 also can be transmitted to wheel through above two approach simultaneously.
When braking the wheel in motion, cut-off clutch 13, the motion energy of wheel is delivered to hydraulic pump/motor 11 by power coupling mechanism 16, and now hydraulic pump/motor 11 works in the mode of pump, can play brake action to complete machine; Hydraulic oil is pumped in high pressure accumulator 9 from low pressure oil return circuit by hydraulic pump/motor 11 simultaneously, is got up by stored energy.
On the other hand, driving engine 1, under the effect of rotator inertia, still can drive Hydraulic Pump 4 to rotate, thus hydraulic oil pump can be delivered in high pressure accumulator 9 by Hydraulic Pump 4, this portion of energy is stored, further increases energy recovery rate.
This power system is when detecting that at the vehicle launch initial stage energy in high pressure accumulator 9 can not meet driving hydraulic pump/motor 11, and driving engine 1 can drive Hydraulic Pump 4 to hydraulic pump/motor 11 fuel feeding, increases the reliability of system works.
Certainly, the hydraulic pressure conducting oil circuit in power system can increase check valve, change-over valve, etc. parts increase the reliability of system, concrete set-up mode does not describe in detail herein.
In a kind of concrete embodiment, working connection 21 is communicated with/disconnects the steering cylinder 12 of hydraulic hybrid power vehicles or/and operating cylinder 22 by multiway valve group 2; When motor vehicle driven by mixed power is in braking mode, working connection 21 is communicated with the steering cylinder 12 of hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder 22 by multiway valve group 2;
Steering cylinder 12 is for wheel steering; Operating cylinder 22 is for driving the equipment action of hydraulic hybrid power vehicles, and for loader, the equipment of loader is scraper bowl, and operating cylinder 22 is the promotion oil cylinder be connected with scraper bowl.
The energy reclaimed during car brakeing in present embodiment can be directly used in and control steering cylinder 12 or operating cylinder 22, to realize turning to or the action of equipment of vehicle, storing recycling without the need to being recycled to energy storage, making the utilization ratio of braking recuperated energy higher like this.Further, braking recuperated energy not only can be stored in high pressure accumulator 9, is used for driving vehicle to travel, but also can controls equipment action or turn to, make utilizing of recuperated energy wider.
In addition, Hydraulic Pump 4 in above-mentioned power system can be used for as operating cylinder 22 and steering cylinder 12 fuel feeding to a certain extent, needed for the work meeting operating cylinder 22 and steering cylinder 12, original independently steering pump and working-machine pump in prior art can be cancelled, reduce vehicle use cost.
In a kind of detailed description of the invention, steering cylinder 12 is or/and the working oil chamber of operating cylinder 22 can be communicated with/disconnect further by multiway valve group 2 actuator port of high pressure accumulator 9; When steering cylinder 12 or/and the working oil chamber oil return of operating cylinder 22 time, steering cylinder 12 is or/and the working oil chamber of operating cylinder 22 is communicated with the actuator port of high pressure accumulator 9.
Like this, steering cylinder 12 or/and operating cylinder 22 working oil chamber in hydraulic oil can flow into high pressure accumulator 9, that is, on the basis of the energy that the high pressure accumulator 9 in this power system is braked at recyclable vehicle driving, can also reclaim turn to braking energy, equipment service braking energy, Brake energy recovery face is wider.
Be communicated with working connection 21 and comprise the first pipeline and the second pipeline with the pipeline of the actuator port of high pressure accumulator 9, switch valve comprises the first switch valve 6 and second switch valve 23; First switch valve 6 is located at the first pipeline, and second switch is located at the second pipeline.
Hydraulic oil flows out respectively by the first pipeline and the second pipeline and flows into the inside of high pressure accumulator 9; Like this, hydraulic oil flows into respectively by different passages and flows out high pressure accumulator 9, can improve the reliability of system works.
In addition, can be provided with on-off valve on the first pipeline and the second pipeline, on-off valve is defined as the first check valve 7 and the second check valve 24, hydraulic pump outlet working connection is arranged check valve 5, ensures the unidirectional unlatching of hydraulic oil.
Hydraulic hybrid power system in the various embodiments described above can also comprise change speed gear box 14, and change speed gear box 14 is located between power-transfer clutch 13 and power coupling mechanism 16.
Hydraulic Pump 4 in the various embodiments described above can be volume adjustable hydraulic pump 4, and hydraulic pump/motor 11 is variable delivery hydraulic pump/motor 11.
Auxiliary gear box 3 in the various embodiments described above and power coupling mechanism 16 can be Multi-stage transmission gear cluster, arrange according to concrete environment for use.
In addition, the working connection 21 in the various embodiments described above can also be provided with by pass valve 10, and working connection 21 is communicated with low-pressure reservoir 15 by by pass valve 10, further ensures the reliability of system works.
In the various embodiments described above, the structure of multiway valve group 2 can by various ways, as long as can realize above-mentioned technique effect.
The control of each component actuation can be controlled by power assembly controller 8 above.
On the basis of above-mentioned hydraulic hybrid power system, the utility model additionally provides a kind of hydraulic hybrid power vehicles, and comprise wheel and control the hydraulic hybrid power system of wheel, hydraulic hybrid power system is the hydraulic hybrid power system of above-mentioned any one.
Other part informations of hydraulic hybrid power vehicles please refer to prior art, do not repeat at this.
Because the hydraulic hybrid power vehicles in the utility model has above-mentioned hydraulic hybrid power system, therefore this hydraulic hybrid power vehicles also has the above-mentioned technique effect of hydraulic hybrid power system.
Above a kind of hydraulic hybrid power vehicles provided by the utility model and hydraulic hybrid power system thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (11)
1. a hydraulic hybrid power system, comprise driving engine (1), hydraulic pump/motor (11), Hydraulic Pump (4), high pressure accumulator (9), it is characterized in that, directional control valve is provided with between described Hydraulic Pump and described hydraulic pump/motor, also comprise auxiliary gear box (3) and power coupling mechanism (16)
The output shaft of described driving engine (1) directly connects the input shaft of described auxiliary gear box (3), and the first output shaft of described auxiliary gear box (3) is connected by power-transfer clutch (13)/disconnected the first input shaft of described power coupling mechanism (16);
The axle drive shaft of the second output shaft connecting fluid press pump of described auxiliary gear box (3), the hydraulic oil outlet of described Hydraulic Pump is communicated with/disconnects described hydraulic pump/motor by described directional control valve, and the output shaft of described hydraulic pump/motor connects the second input shaft of described power coupling mechanism (16);
The output shaft of described power coupling mechanism (16) connects the drive axle (17) of hydraulic hybrid power vehicles;
Described hydraulic pressure delivery side of pump working connection (21) all by directional control valve can be communicated with oil outlet with the oil inlet of described hydraulic pump/motor/disconnect;
The actuator port of described high pressure accumulator (9) can be communicated with/disconnect described working connection (21) by switch valve, so that the hydraulic oil that the hydraulic oil in working connection (21) flows in described high pressure accumulator (9) or described high pressure accumulator (9) flows into described working connection (21).
2. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, also comprise multiway valve group (2), described working connection (21) is communicated with/disconnects the steering cylinder (12) of described hydraulic hybrid power vehicles or/and operating cylinder (22) by described multiway valve group (2);
When described motor vehicle driven by mixed power is in braking mode, the outlet of described hydraulic pump/motor is communicated with described steering cylinder (12) or/and the working oil chamber of described operating cylinder (22), to realize Vehicular turn or work operations through described working connection (21) by described multiway valve group (2);
Described steering cylinder (12) is for wheel steering; Described operating cylinder (22) is for driving the equipment action of described hydraulic hybrid power vehicles.
3. hydraulic hybrid power system as claimed in claim 2, it is characterized in that, described hydraulic pressure delivery side of pump is communicated with described steering cylinder (12) or/and the working oil chamber of described operating cylinder (22), to realize Vehicular turn or work operations through described working connection by described multiway valve group (2).
4. hydraulic hybrid power system as claimed in claim 2, it is characterized in that, described steering cylinder (12) is or/and the working oil chamber of described operating cylinder (22) is communicated with further by described multiway valve group (2)/disconnects the actuator port of described high pressure accumulator (9);
When described steering cylinder (12) or/and the working oil chamber oil return of described operating cylinder (22) time, described steering cylinder (12) is or/and the working oil chamber of operating cylinder (22) is communicated with the actuator port of described high pressure accumulator (9).
5. the hydraulic hybrid power system as described in any one of Claims 1-4, it is characterized in that, be communicated with described working connection (21) and comprise the first pipeline being provided with on-off valve and the second pipeline being provided with on-off valve with the pipeline of the actuator port of described high pressure accumulator (9), switch valve comprises the first switch valve (6) and second switch valve (23); Described first switch valve (6) is located at described first pipeline, and described second switch valve (23) is located at described second pipeline;
Hydraulic oil flows out respectively by described first pipeline and described second pipeline and flows into the inside of described high pressure accumulator (9).
6. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, also comprise change speed gear box (14), described change speed gear box (14) is located between described power-transfer clutch (13) and described power coupling mechanism (16).
7. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, described Hydraulic Pump is volume adjustable hydraulic pump, and described hydraulic pump/motor is variable delivery hydraulic pump/motor.
8. the hydraulic hybrid power system as described in any one of Claims 1-4, it is characterized in that, described directional control valve is three position four-way directional control valve (18), when described three position four-way directional control valve (18) is positioned at the first control position, described high pressure accumulator (9), described Hydraulic Pump are communicated with the oil inlet of described hydraulic pump/motor by described three position four-way directional control valve (18), and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator (9) by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
9. hydraulic hybrid power system as claimed in claim 5, it is characterized in that, described directional control valve is three position four-way directional control valve (18), when described three position four-way directional control valve (18) is positioned at the first control position, described high pressure accumulator (9), described Hydraulic Pump are communicated with the oil inlet of described hydraulic pump/motor by described three position four-way directional control valve (18), and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator (9) by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
10. hydraulic hybrid power system as claimed in claim 6, it is characterized in that, described directional control valve is three position four-way directional control valve (18), when described three position four-way directional control valve (18) is positioned at the first control position, described high pressure accumulator (9), described Hydraulic Pump are communicated with the oil inlet of described hydraulic pump/motor by described three position four-way directional control valve (18), and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator (9) by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
11. 1 kinds of hydraulic hybrid power vehicles, comprise wheel and control the hydraulic hybrid power system of described wheel, it is characterized in that, described hydraulic hybrid power system is the hydraulic hybrid power system described in any one of claim 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520262694.6U CN204870526U (en) | 2015-04-27 | 2015-04-27 | Hydraulic hybrid vehicle and hydraulic hybrid system thereof |
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| CN201520262694.6U CN204870526U (en) | 2015-04-27 | 2015-04-27 | Hydraulic hybrid vehicle and hydraulic hybrid system thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816621A (en) * | 2015-04-27 | 2015-08-05 | 潍柴动力股份有限公司 | Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof |
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN108284737A (en) * | 2018-01-25 | 2018-07-17 | 吉林大学 | A kind of hydraulic hybrid power system for road sweeper |
| CN111173069A (en) * | 2020-01-07 | 2020-05-19 | 燕山大学 | Energy recovery and reuse system of hybrid power loader and control strategy thereof |
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
-
2015
- 2015-04-27 CN CN201520262694.6U patent/CN204870526U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816621A (en) * | 2015-04-27 | 2015-08-05 | 潍柴动力股份有限公司 | Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof |
| CN104816621B (en) * | 2015-04-27 | 2017-07-28 | 潍柴动力股份有限公司 | Hydraulic hybrid power vehicles and its hydraulic hybrid power system |
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN105480218B (en) * | 2016-01-31 | 2019-04-05 | 张学栋 | It is a kind of without abrasion hydraulic braking method, apparatus and vehicle |
| CN108284737A (en) * | 2018-01-25 | 2018-07-17 | 吉林大学 | A kind of hydraulic hybrid power system for road sweeper |
| CN111173069A (en) * | 2020-01-07 | 2020-05-19 | 燕山大学 | Energy recovery and reuse system of hybrid power loader and control strategy thereof |
| CN111173069B (en) * | 2020-01-07 | 2022-03-01 | 燕山大学 | Energy recovery and reuse system of hybrid power loader and control strategy thereof |
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
| CN113879097B (en) * | 2021-09-15 | 2023-04-18 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
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